class_docstr: A graph consists of connected Blocks, or Heads.
  
  # Arguments
      inputs: A list of input node(s) for the Graph.
      outputs: A list of output node(s) for the Graph.
code: def set_io_shapes(self, shapes):
      for node, shape in zip(self.inputs, nest.flatten(shapes[0])):
          node.shape = tuple(shape[1:])
      for node, shape in zip(self.outputs, nest.flatten(shapes[1])):
          node.in_blocks[0].shape = tuple(shape[1:])
  
imports: import keras_tuner
  from tensorflow import keras
  from tensorflow import nest
  from autokeras import blocks
  from autokeras import keras_layers
  from autokeras import nodes
  from autokeras.engine import head
  from autokeras.engine import serializable
  from autokeras.utils import io_utils
label_desc: Use image node_id 14 for calling the Graph obj's underlying member method code with example usage: obj.set_io_shapes(shapes) without return types